:root {
  --bg: #f4f6f8;
  --card: #ffffff;
  --text: #16202a;
  --muted: #697785;
  --accent: #0f6fd1;
  --ok: #1aa565;
  --border: #e3e8ed;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #11161b;
    --card: #1a2128;
    --text: #eef2f6;
    --muted: #9aa7b4;
    --accent: #3d93ea;
    --ok: #2bc47d;
    --border: #2a333c;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
}

.card {
  width: 100%;
  max-width: 420px;
  padding: 32px 28px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  text-align: center;
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--muted);
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ok);
}

h1 {
  margin: 16px 0 8px;
  font-size: 26px;
  line-height: 1.2;
}

.lead {
  margin: 0 0 28px;
  color: var(--muted);
}

.button {
  display: block;
  padding: 13px 20px;
  border-radius: 10px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  text-decoration: none;
}

.button:hover { filter: brightness(1.08); }

.footer {
  margin-top: 24px;
  font-size: 13px;
  color: var(--muted);
}